Yeah, I use it regularly at least every other day when I'm busy working in the house (without going to my office for my main setup).....it has never froze on my FLACs (all i use are tagged FLACs with 16bit/44khz) and has played flawlessly....no volume bugs etc...this is on 1.16....no korean support yet but the files play at least now.....really nice and portable and a great match for my IEMs I've thrown @ it thus far (Heir 4ai, Shure 535SE, TG334, Parterre, 4R) etc....I am sensitive to highs and I don't feel anything is what I'd consider harsh or sharp either. Pretty neutral overall if I had to pin a signature on the player. Good luck to those having a lot of issues, I know confidently the best has yet to come as the new firmwares roll out from iBasso in the upcoming weeks/months.
P.S. Only times I did notice the lag was playing 24bit/96khz flacs.....player gets sluggish and the more you play the more sluggish it gets.....perhaps some of this attributes to the volume problem with the lag on volume control etc *Shrug*.